SU1375979A1 - Apparatus for analysing fluid media - Google Patents

Abstract

The invention relates to devices for the preparation of test fluids and can be used in conjunction with analyzer instruments, such as an IR spectrophotometer. The aim of the invention is to increase the reliability of the device and expand its scope. Device analyzer 1 is mounted on carriage 3 moving in directions 4 by means of a drive. 5. In the cuvette socket 2 of the analyzer, there is a niche 7 of the insulated chamber 6 with a cuvette unit 8. The niche is provided with windows 9. During the measurement, the optical axis of the device coincides with the optical axes of the windows and the cuvette. 2 Il.

Description

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The invention relates to devices for the preparation of test fluids and can be used in conjunction with analyzer devices, such as an IR spectrophotometer,

The aim of the invention is to increase the reliability of the device and expand its use.

Fig. I shows the device a general view; figure 2 is the same section along the optical axis of the device.

The device consists of an analyzer device 1, for example, an IKS-30 spectrophotometer, having a socket 2 for installing a cuvette compartment. The device 1 is mounted on a carriage 3, which can be linearly guided along the guides 4 by means of a stepper drive 5. The guides are fixed in the wall of the insulated chamber 6. The insulated chamber has a niche 7 located in the slot 2 of the analyzer 1. In the niche 7 the unit is installed analytic cells 8 and windows 9 are made. Each analytical cell 10 is located in correspondence with a corresponding window in an insulated chamber 6 and is connected by supplying metal tubes I1 to TojiKaMH for the selection of the studied media. Samples of the analyzed medium are supplied to the cuvettes under the influence of the vacuum created in the cuvettes through the sleeving tubes 12, which are attached to the upper part of the cuvette 0 and connected to the collecting tank 13. The supply tubes are equipped with valves 14. Measurement methods depending on the spectral region under investigation and the characteristics of the medium under study are established by the cuvettes with the thickness of the cuvette 10 and the windows 9 of the required materials.

The device works as follows.

The signal from the control system (not shown) opens the corresponding valve 14 and the test medium enters the cell 10 through the action of the vacuum created in the collecting tank 13 connected to the vacuum source, for example, from the operating tank (not shown ). The filling of the cuvette 10 is performed smoothly without the formation of air in it.

bubbles. Having filled the cuvette, the excess medium through the discharge tube 12 enters the collecting tank 13. At a signal from the control system, the valve 1D is closed, and the flow of the test medium into the cuvette is stopped.

Filling the other cuvettes occurs according to the method.

pattern.

The analyzer device 1, mounted on the carriage 3, along the guides 4 with the help of the stepper actuator 5 is moved relative to the isolated

camera 6 parallel to the block of analytical ditch 8 to the corresponding ditch. The drive 5 of the carriage 3 is adjusted manually or by means of a programmed regulating means.

In this case, each cuvette has its own code for coordinating the processes: filling the cuvette, moving the instrument-analyzer and measuring.

Stepper actuator 5 allows the analyzer I to be moved automatically to any cuvette, in any order. The cuvette 10 of the window 9 of the insulated chamber 6 during measurements is located on the optical axis

analyzer device I.

The device is compact and convenient to maintain due to the absence of moving parts inside the exhaust

cabinet, increased reliability of the device. The presence of rigid metal tubes for the transfer of medium stabilizes the flow conditions of the medium passing through the tubes, which is important when conducting high-precision measurements. The device allows automatic studies of aggressive, explosive, toxic, radioactive fluids with

using commercially available instrument analyzers, such as IR spectrophotometers.

Claims (1)

Invention Formula A device for studying fluids containing an analyzer, a chamber for installing analytical cells, supply pipes connected to analytical cells, characterized in that, in order to expand the field of application and increase reliability, the device-analyzer is equipped with a movable carriage with a socket for the analytical cuvettes and mounted for movement relative to the unit of analytical cuvettes mounted in an isolated chamber, the insulated chamber and the analytical cuvettes being made There are windows with optical axes that coincide with the optical axis of the instrument-analyzer during measurement. fDu2.2.